Janice Buckingham

Dereck is a senior family law lawyer, having practiced exclusively in this area since being called to the Alberta Bar in 1995. Dereck holds a B.A. (Hons.) from McGill University followed by his L..L.B. from the University of Alberta. As a skilled litigator, he has appeared successfully at all levels of court in Alberta as well as in numerous arbitrations. Dereck also has extensive experience in negotiating settlements and drafting agreements. He applies a reasoned approach to his files and en...

Michael practises exclusively in the area of Pensions and Benefits law. He provides private and public sector clients, including boards of trustees, with strategic advice and practical counsel about legal, legislative and regulatory issues surrounding retirement plans, employment benefits and related human resource matters. In business transactions, Michael advises clients on the pension and benefit implications. He assists clients with drafting, amending and interpreting a wide variety of pl...

Katherine Rubin is an associate in Fasken’s Knowledge and Practice Innovation department, and works with the Banking and Finance group across the Firm. In this role, Katherine assists the Banking and Finance group by creating and locating resources and content to ensure the efficient and consistent delivery of high quality legal services, and by maximizing the group’s shared intellectual capital. Katherine has a broad range of experience in banking and finance law, and has represe...

Over the 20 years Tonii Roulston has been a member of the Calgary Bar Association, she has built her long-standing reputation as a tough criminal defence lawyer. Known for her strategic thinking, and effectiveness in the courtroom, she has represented a variety of challenging and high-profile cases. As a female lawyer, she holds an advantage in vigorously questioning female complainants on difficult details including their motivations to lie and inconsistencies in their accusations. Tonii is ...

Dennis Langen practices regulatory law and litigation and has an in-depth knowledge of the energy industry. With a practice focused on oil and gas and electricity, Dennis assists clients in navigating energy regulatory regimes and frameworks in dynamic technical and business environments. He has extensive experience in the regulation of energy and infrastructure development, energy markets and energy services. He advises clients in respect of federal and provincial regulation of infrastructur...

John Cassell is the Canadian co-head of our cybersecurity and data privacy practice. John assists clients with all manner of privacy and cybersecurity law issues including: responding to complex local and international cybersecurity incidents, advising on risk management strategies, assisting clients with access to information requests, complying with Canada's anti-spam legislation and proceedings before the offices of the Alberta and federal privacy commissioners.

Family Lawyer for 30+ years. Mediator for 25+ years. Arbitrator and parenting coordinator for 15+ years. Current Co-Chair of the Alberta Family Lawyers Association; Past President for the Canadian Bar Association (CBA) Alberta Branch; Past National Chair for the Family Law Section of the CBA; Background in psychology and corporate litigation.

Clay Jacobson is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Energy Law. Clay, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Clay is held by other top lawyers in the same geographic and legal practice area.

Katherine Prusinkiewicz is the knowledge lawyer for the Calgary office, working to leverage the practice's collective wisdom to ensure efficiency and uniform quality. She supports lawyers in our business law group with model documents and precedents, legal updates, training and other information needs and assists in our client communication program. As a result of our knowledge management initiatives and the practice’s culture of contributing and sharing knowledge, our clients can expec...

Brad Hayden is a senior business lawyer. He has an extensive background in leadership, management, strategic and operational planning, organizational transformation and change management, client relationship management, business operations, governance and communication. Brad practises business law, with a focus on the energy and transportation industries. He works with businesses involved in mergers, acquisitions, divestitures and financings, domestic and cross-border reorganizations, corpora...